Approximate Annual Net Yield of Nitrogen per Animal Unit (lb)

Approximate # of Animal Units Needed to Provide 100 lb of Nitrogen per Year

BEEF (1000 lb. Animal Unit)

Pit Storage

43-87

1.1-2.3

Open Lot-Solids & Runoff

50-62

1.6-2.0

Bedded confinement – Solids

74-87

1.1-1.4

SWINE (100 lb. Animal Unit)

Pit Storage

6-12

8.3-16.7

Open Lot-Solids & Runoff

7-8

12.5-14.3

Bedded Confinement-Solids

10-12

8.3-10.0

DAIRY (1000 lb. Animal Unit)

Pit Storage

52-105

1.0-1.9

Open Lot-Solids & Runoff

60-75

1.3-1.7

Bedded Confinement-Solids

90-105

1.0-1.1

POULTRY (4 lb. Animal Unit)

0.4-0.6

167-250